//\/////
//\  overLIB Follow Scroll Plugin
//\  This file requires overLIB 4.10 or later.
//\
//\  overLIB 4.10 - You may not remove or change this notice.
//\  Copyright Erik Bosrup 1998-2004. All rights reserved.
//\  Contributors are listed on the homepage.
//\  See http://www.bosrup.com/web/overlib/ for details.
//\/////
if (typeof olInfo=='undefined'||typeof olInfo.meets=='undefined'||!olInfo.meets(4.10)) alert('overLIB 4.10 or later is required for the Follow Scroll Plugin.');else {registerCommands('followscroll,followscrollrefresh');
if (typeof ol_followscroll=='undefined') var ol_followscroll=0;if (typeof ol_followscrollrefresh=='undefined') var ol_followscrollrefresh=100;
var o3_followscroll=0;var o3_followscrollrefresh=100;
function setScrollVariables() {o3_followscroll=ol_followscroll;o3_followscrollrefresh=ol_followscrollrefresh;}
function parseScrollExtras(pf,i,ar) {var k=i,v;if (k<ar.length) {if (ar[k]==FOLLOWSCROLL) { eval(pf+'followscroll=('+pf+'followscroll==0)?1:0'); return k; }
if (ar[k]==FOLLOWSCROLLREFRESH) { eval(pf+'followscrollrefresh='+ar[++k]); return k; }
}
return-1;}
function scroll_placeLayer() {var placeX, placeY, widthFix=0;
if (o3_frame.innerWidth) {widthFix=Math.ceil(1.2*(o3_frame.outerWidth-o3_frame.innerWidth));widthFix=(widthFix>50)?20:widthFix;iwidth=o3_frame.innerWidth;} else if (eval('o3_frame.'+docRoot)&&eval("typeof o3_frame."+docRoot+".clientWidth=='number'")&&eval('o3_frame.'+docRoot+'.clientWidth'))
iwidth=eval('o3_frame.'+docRoot+'.clientWidth');
winoffset=(olIe4)?eval('o3_frame.'+docRoot+'.scrollLeft'):o3_frame.pageXOffset;
placeX=runHook('horizontalPlacement',FCHAIN,iwidth,winoffset,widthFix);
if (o3_frame.innerHeight) iheight=o3_frame.innerHeight;else if (eval('o3_frame.'+docRoot)&&eval("typeof o3_frame."+docRoot+".clientHeight=='number'")&&eval('o3_frame.'+docRoot+'.clientHeight'))
iheight=eval('o3_frame.'+docRoot+'.clientHeight');
scrolloffset=(olIe4)?eval('o3_frame.'+docRoot+'.scrollTop'):o3_frame.pageYOffset;
placeY=runHook('verticalPlacement',FCHAIN,iheight,scrolloffset);
repositionTo(over,placeX,placeY);
if (o3_followscroll&&o3_sticky&&(o3_relx||o3_rely)&&(typeof o3_draggable=='undefined'||!o3_draggable)) {if (typeof over.scroller=='undefined'||over.scroller.canScroll) over.scroller=new Scroller(placeX-winoffset,placeY-scrolloffset,o3_followscrollrefresh);}
}
function Scroller(X,Y,refresh) {this.canScroll=0;this.refresh=refresh;this.x=X;this.y=Y;this.timer=setTimeout("repositionOver()",this.refresh);}
function cancelScroll() {if (!o3_followscroll||typeof over.scroller=='undefined') return;over.scroller.canScroll=1;
if (over.scroller.timer) {clearTimeout(over.scroller.timer);over.scroller.timer=null;}
}
function getPageScrollY() {if (o3_frame.pageYOffset) return o3_frame.pageYOffset;if (eval(docRoot)) return eval('o3_frame.'+docRoot+'.scrollTop');return-1;}
function getPageScrollX() {if (o3_frame.pageXOffset) return o3_frame.pageXOffset;if (eval(docRoot)) return eval('o3_frame.'+docRoot+'.scrollLeft');return-1;}
function getLayerTop(layer) {if (layer.pageY) return layer.pageY;if (layer.style.top) return parseInt(layer.style.top);return-1;}
function getLayerLeft(layer) {if (layer.pageX) return layer.pageX;if (layer.style.left) return parseInt(layer.style.left);return-1;}
function repositionOver() {var X, Y, pgLeft, pgTop;pgTop=getPageScrollY();pgLeft=getPageScrollX();X=getLayerLeft(over)-pgLeft;Y=getLayerTop(over)-pgTop;
if (X!=over.scroller.x||Y!=over.scroller.y) repositionTo(over, pgLeft+over.scroller.x, pgTop+over.scroller.y);over.scroller.timer=setTimeout("repositionOver()", over.scroller.refresh);}
registerRunTimeFunction(setScrollVariables);registerCmdLineFunction(parseScrollExtras);registerHook("hideObject",cancelScroll,FAFTER);registerHook("placeLayer",scroll_placeLayer,FREPLACE);if (olInfo.meets(4.10)) registerNoParameterCommands('followscroll');}
